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参数资料
| 型号： | DC682A |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | BOARD SAR ADC LTC1859 |
| 软件下载： | QuikEval System |
| 设计资源： | DC682A Design File DC682A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval™, SoftSpan™ |
| ADC 的数量： | 1 |
| 位数： | 16 |
| 采样率（每秒）： | 100k |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 工作温度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC1859 |
| 已供物品： | 板 |
| 相关产品： | LTC1859CG#PBF-ND - IC ADC 8CH 16BIT 100KSPS 28-SSOP LTC1859IG#PBF-ND - IC A/D CONV 8CH 16BIT 28-SSOP LTC1859IG#TRPBF-ND - IC A/D CONV 8CH 16BIT 28-SSOP LTC1859CG#TRPBF-ND - IC A/D CONV 8CH 16BIT 28-SSOP |
LTC1857/LTC1858/LTC1859
1
185789fa
100kHz, 12-Bit/14-Bit/16-Bit Sampling ADC
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
8-Channel, 12-/14-/16-Bit,
100ksps SoftSpan A/D
Converters with Shutdown
The LTC1857/LTC1858/LTC1859 are 8-channel, low
power, 12-/14-/16-bit, 100ksps, analog-to-digital convert-
ers (ADCs). These SoftSpan ADCs can be software-
programmed for 0V to 5V, 0V to 10V, ±5V or ±10V input
spans and operate from a single 5V supply. The 8-channel
multiplexer can be programmed for single-ended inputs
or pairs of differential inputs or combinations of both. In
addition, all channels are fault protected to ±25V. A fault
condition on any channel will not affect the conversion
result of the selected channel.
An onboard high performance sample-and-hold and pre-
cision reference minimize external components. The low
40mW power dissipation is made even more attractive with
two user selectable power shutdown modes. DC specica-
tions include ±3LSB INL for the LTC1859, ±1.5LSB INL
for the LTC1858 and ±1LSB for the LTC1857.
The internal clock is trimmed for 5μs maximum conversion
time and the sampling rate is guaranteed at 100ksps. A
separate convert start input and data ready signal (BUSY)
ease connections to FIFOs, DSPs and microprocessors.
n Sample Rate: 100ksps
n 8-Channel Multiplexer with ±25V Protection
n Single 5V Supply
n Software-Programmable Input Ranges:
0V to 5V, 0V to 10V, ±5V or ±10V
Single Ended or Differential
n ±3LSB INL for the LTC1859, ±1.5LSB INL for the
LTC1858, ±1LSB INL for the LTC1857
n Power Dissipation: 40mW (Typ)
n SPI/MICROWIRE Compatible Serial I/O
n Power Shutdown: Nap and Sleep
n
Signal-to-Noise Ratio: 87dB (Typ) for the LTC1859
n
Operates with Internal or External Reference
n
Internal Synchronized Clock
n
28-Pin SSOP Package
n Industrial Process Control
n Multiplexed Data Acquisition Systems
n High Speed Data Acquisition for PCs
n Digital Signal Processing
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. SoftSpan is
a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
LTC1859 Typical INL Curve
COM
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
MUXOUT+
MUXOUT–
ADC+
ADC–
AGND1
CONVST
RD
SCK
SDI
DGND
SDO
BUSY
OVDD
DVDD
AVDD
AGND3
AGND2
REFCOMP
VREF
LTC1857/
LTC1858/
LTC1859
SOFTWARE-PROGRAMMABLE
SINGLE-ENDED OR
DIFFERENTIAL INPUTS
(0V TO 5V, 0V TO 10V,
±5V OR ±10V)
10μF
1μF
10μF
3V TO 5V
5V
2.5V
10μF
μP
CONTROL
LINES
CODE
–32768
INL
(LSB)
0
0.5
1.0
0
1859 TA02
–0.5
–1.0
–2.0
–16384
16384
32767
–1.5
2.0
1.5
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